Metallic copper removal optimization from real wastewater using pulsed electrodeposition

Autor(es)

de Morais Nepel, Thayane Carpanedo ^[1] ; Landers, Richard ^[2] ; Adeodato Vieira, Melissa Gurgel ^[1] ; de Almeida Neto, Ambrosio Florencio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Chem Engn, 500 Albert Einstein Ave, BR-13083852 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Gleb Wataghin Inst Phys, 500 Albert Einstein Ave, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF HAZARDOUS MATERIALS; v. 384, FEB 15 2020.
• Citações Web of Science: 7

Resumo

The recovery of metals from wastewater is a recurrent problem due to numerous productive activities that produce wastewaters rich in toxic metals. Within this context, this research presents the study and optimization of copper recovery of real wastewater using pulsed electrodeposition. The studied parameters - method, current, temperature, and rotation - influence both the removal of Cu and the composition of the formed deposit, noting that the variation of these parameters enables the removal of copper with formation from crystalline oxides to crystalline copper in its metallic form. The process was optimized, and a 33.59% copper removal from a real wastewater with a deposition efficiency of 84.36% in 30 min was deemed optimal, using fast galvanic pulse, t(on) = 1 ms, 190 mA, 70 rpm, and 37 degrees C. For coating in the optimum point, a metallic and crystalline copper with 100% purity was obtained. (AU)

• Processo FAPESP: 17/24887-5 - Remoção de Íons Metálicos de Água de Enxágue da Galvanoplastia por Meio da Eletrodeposição para Formação de Ligas Metálicas Resistentes à Corrosão
• Beneficiário: Ambrósio Florêncio de Almeida Neto
• Modalidade de apoio: Auxílio à Pesquisa - Regular